| Title |
Estimation of Delivery Ratio Based on BASINS/HSPF Model for Total Maximum Daily Load |
| Authors |
박주현 ( Ju Hyun Park ) ; 황하선 ( Ha Sun Hwang ) ; 류덕희 ( Doug Hee Rhew ) ; 권오상 ( Oh Sang Kwon ) |
| Keywords |
BASINS/HSPF; Delivery ratio; TMDL; Validation; Verification |
| Abstract |
In this study Window interface to Hydrological Simulation Program-FORTRAN (HSPF) developed by the United States Environmental Protection Agency (EPA) was applied to the upstream of Namgang watershed to estimate its applicability for estimating Delivery Ratio (DR) of water pollutants for Total Maximum Daily load (TMDL). BASINS/HSPF which is selected in this study, is found to be appropriate for simulation of daily flow and water quality in target basins. DR was estimated utilizing discharge loads of unobserved sub-basin and delivery load of unobserved locations obtained not by actual evaluation but by simulation through validation and verification. Annual average DR of BOD, TN and TP were 0.97~1.50, 2.23~3.21, and 0.81~1.09 respectively. NET DR of dependent basins excluding influence of upstream basin was 1.50~1.70, 0.55~0.69, and 0.24~0.31, all of which are lower than those of independent basins area. Utilizing the model selected by this research, DR and Net DR of unobserved basins will be estimated, which will help determine priorities in management of basin area. |